Home / 3,028.20-4,178.28-2,190.18

Finding the Fourth Proportional to 3,028.20, 4,178.28 and 2,190.18

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Solution

The fourth proportional to 3,028.20, 4,178.28 and 2,190.18 is: 3,021.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.20 : 4,178.28 = 2,190.18 : x
  2. Step 2: Convert to fraction form
    3,028.20/4,178.28 = 2,190.18/x
  3. Step 3: Cross multiply
    3,028.20x = 4,178.28 × 2,190.18
  4. Step 4: Simplify right side
    3,028.20x = 9,151,185.29
  5. Step 5: Solve for x
    x = 9,151,185.29/3,028.20
  6. Step 6: Final answer
    x = 3,021.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.